#include <iostream>
using namespace std;

int main() {
    int year;
    cout << "输入一个你最喜欢的年份: ";
    cin >> year;

    cout << "你输入的年份: " << year << " 以此而著名: ";
    switch (year) {
        case 1492:
            cout << "哥伦布环游世界!\n";
            break;

        case 1776:
            cout << "费城公约!\n";
            break;

        case 1969:
            cout << "人类登月!\n";
            break;

        default:
            cout << "\n真糟。这年份没出什么大事。\n";
            break;
    }
}